Delivery mechanism for printing-presses



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v D. I. ECKBRSON. DELIVERY MECHANISM FOR PRINTING PRESSES.

No. 457,187. Patented Aug. 4, 1 :91}

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'eaooooooosp v 3 Sheets-Sheet 2. 11. 1. EGKERSON. DELIVERY MECHANISM FORPRINTING PRESSB3.

(No' Model.)

N01 457,187. Patented'A ug. 4, 1891.

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UNITED STATES PATENT OFFICE.

DAVID I. EOKERSON, OF \VOROESTER, NEW YORK. I

' DELIVERY MECHANISM FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 457,187, dated August4, 1891.

Application filed March 21, 1891- To all whom it may concern,-

Be it known that 1, DAVID I.ECKERSON,& citizen of the United States,residing at Torcester, in the county of Otsegoand State of New York,have invented certain new and useful Improvements in Delivery Mechanismfor Printing-Presses; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

This invention relates to improvements in printing-presses of that classwhich are adapted to print upon a continuous sheet of paper taken from aroll and to be run at a high rate of speed, and it is especially adaptedto be used with a machine such as is shown and described in patentsnumbered 432,385 and 433,776, granted to me July 15, 1890, and August 5,1890, respectively. I

In all printing-machines which are run at a high rate of speed and whichdeliver the printed paper in large sheets upon a deliverytable muchtrouble is experienced in han dling these large sheets as they leave thepress, as they will not readily drop onto the table, owing to theresistance of the air beneath them, and are apt to slide off to the sideor remain suspended and be in the way 0f e succeeding sheet. The objectof this invention is to provide a means whereby this culty is obviatedand which will positively and quickly deposit each sheet in its P perplace upon the table as soon as it is vered from the web. i

The invention consists in providing the delivery-table with a carrierwhich is adapted to receive the web or sheet from the intermittentfeed-rollers after it has passed beneath the reciprocating knife andconduct it over the delivery-table and on the severing of the sheetdeposit it upon the table. The carrier consists of two parallel trackssupported one upon each side of the table by rock-shafts, and of endlessbelts carried by adjustable pulleys, so that their lower sideswillcontactwith the tracks, and of arms carriedby the rock-shaftsadapted todepress the sheets as they are released from the carrier;

Serial No. 385,885. (No model.)

and it also consists in providing means whereby the endless belts aredriven at the same rate of speed as that of the peripheries of thefeed-rollers, so that the paper will be withdrawn from the press at thesame speed of a, printing-press embodying the invention,

only showing, however,such parts as is necessary to illustrate theinvention. plan view. Fig. 3 is a longitudinal vertical section. Fig. 4is a detail perspective view Fig.2 is a illustrating the manner in whichthe sheet is borne by the carrier. Fig. 5 shows two detail views of theend retaining-frame, the first View showing the means adopted for adjusting the frame, the second showing the coiled spring adapted to holdthe frame in its upright position. Fig. 6 is a transverse verticalsectional view on the line y 1 of Fig. 3. Fig. 7

is a similar view on the line .2 z of Fig. 3,

showing the relative positions of the diiferent parts of the carrierwhen it is bearing the paper forward. Fig. 8 is a similar view to thatshown in Fig. 7, showing the relative position of the different parts ofthe carrier as the sheet is deposited upon the table. Fig. 9 is anenlarged detail view showing the manner in which the edge of the paperis grasped between the track and the endless bands.

Referring to the drawings, A A designate the side frames of the press.

B is the adjustable carriage, in which are supported the intermittentfeed-rollersC C, the rotary cutters C O, and the reciprocating knife 0.

As these several parts and their operations are specifically describedin the Letters Patent hereinbefo're mentioned, a

full description of the same is not necessary in the presentinstance.

D is a delivery-table secured to the front standards of the carriage l3,and it is provided with the retaining-frames D D and the adjustable endgate D. These retaining-frames and the end gate are provided with meanswhereby they may be adjusted to the size of the sheet to be deliveredupon the table, and the latter is provided witha spring attachment whichwill allow the withdrawal of the sheets by being depressed and whichwill cause it to assume its upright position as soon as the pressure isremoved. Projecting upward from the corners of the frame are thestandards E E. Between these standards, at the front and rear ends ofthe table, respectively, are secured the rods E E, on which, near theirends, are adjustably secured the hangers E E", each of which has abearing formed in its lower end. F F are rock-shafts extending thelength of the table, one on each side, with their ends journaled in thebearings in the lower ends of the hangers. Adjustably secured on each ofthe rock-shafts, near its ends, are the collars ff, each of which has aninwardly-projecting bracket f.

G G are two parallel tracks formed of T- shaped an g1e-iron, extendinglongitudinally of the table and supported, one on each side, by thebrackets f f. These tracks are normally supported so that their upperfaces are in thesame horizontal plane as the upper edge of the lowerknife of the transverse cutters, so that the paper will pass directlyfrom beneath the reciprocating cutter upon the said tracks. The upperfaces of the tracks are polished, so as to offer the least possibleresistance to the paper passing over them, and have projecting fromtheir inner edges the vertical flanges g g, the purpose of which will beexplained further on. The rock-shafts are prevented from movinglongitudinally by the said collars ff, which are secured on the shafts,close to the hangers E E, by setscrews. Inside of the collars ff on therockshafts are adj ustably secured similar collars h h, each of whichhas an arm H secured at its lower end to it. This arm projectshorizontally outward, then upward over the intervening mechanism to apoint inside of and above the face of the track on its respective side.Secured to the free ends of these arms and extending the length of thetable are the rods h h.

Mechanism by means of which the shafts F F are given their rockingmotion will now be described. To the top of the reciprocating At eachcomplete stroke of the reciprocating frame the rock-shafts are partlyrotated and move the arms H H and the tracks G G through an arc ofsubstantially ninety degrees.

L L are lugs projecting forward from the rear standards E E, and inwhich are journaled the ends of the shaft Z. One of the ends of thisshaft projects beyond its hearing and has attached thereto a gear-wheelZ, to which motion is conveyed from the gear on the shaft of thelower oftheintermittentlyrotated feed-rollers C O by the intermediate gears M M,supported by the bracket m. The relative size of these gears is suchthat the peripheral speed of a pulley carried on the shaft Z will be thesame as that of the intermittent feed-rollers.

N N are brackets secured to the front ends of the side frames of thetable in such a manner as to be adjustable longitudinally. In the endsof these brackets are bearings, in which are journaled the ends of theshaft 01.

O O are grooved pulleys carried, two on each, by the shafts Z and n.Those carried on the shaft 1 are keyed on, so as to be rotated with thesaid shaft, and at the same time have free longitudinal movementthereon. Those carried by the shaft 92 are provided with setscrews, sothat they may be secured in any desired position.

P P are endless bands, of any material suitable in the premises, carriedby the grooved pulleys, one on each side of the table. The height atwhich these pulleys are placed is such that the lower sides of theendless bands will contact with the tracks outside of the flanges g g.It is for the purpose of taking up any slack that might occur in theendless bands that the brackets N N are made adjustable.

The tracks are slightly curved longitudinally, so that the centers oftheir upper faces are slightly elevated relatively to the ends. Theobject of this is to cause the bands to bind to a slight extent upon thepaper, and thereby more firmly draw it forward. This curvature is veryslight, however, and, as shown in the drawings, is very much exaggeratedto better illustrate the construction.

The operation of the device will now be described. Before the machine isstarted it is necessary to adjust the "various parts so that they willbe adapted to the size of the sheet to be printed. justed to give theproper space upon the table for the reception of the sheets. The

tracks are so adjusted that the distance be-' tween them is somewhatless than the width of the sheet. This is accomplished by mov- Theretaining-frames are ad-.

IIO

ing the hangers on the supporting-rods E E,

and the pulleys are adjusted on their respective shafts so as to bringthe endless bands in their proper position on the tracks. WVhen inoperation, the paper is ,.fed beneath the re-- ciprocating cutter to thecarrier of the delivery-table, which grasps the side edges of the paperbetween the endless bands and the tracks and bears it over the table.The object of the flanges g g is to enable the bands to more securelygrasp the paper. When the whole sheet has passed the reciprocatingcutter, which has been adjusted as to its movement, it will descend andseverthe sheetfrom the web. This movement of the knife will partlyrotate the rock-shafts F F and their contiguous parts, which will lowerthe tracks from the endless bands and release the paper, and the rodscarried by the arms H H will force the sheet from the endless bands, ifit should be caused to adhere by electric attraction, upon the table.Immediately that the knife moves upward the several parts will assumetheir original positions and be ready for the next sheet.

Having thus described my invention, what I claim, and desire to securebyLetters Patent, is

1. In a carrier for printing-presses, the combination of the flangedtracks and the endless bands moving in contact with the same,substantially as described.

2. In a carrier for printing-presses, the combination of the movabletracks and the endless bands moving in contact with the said tracks,substantially as described.

3. In a carrier for printing-presses, the combination of the movabletracks, the endless bands moving in contact with the said tracks, andthe depressing-arms, substantially as described.

4. In a printing-press, the combination of the delivery-table, therock-shafts journaled longitudinally thereof, the tracks carried by thesaid rock-shafts, and the endless bands moving in contact with the saidtracks, substantially as described.

5. In a'printing-press, the combination of the delivery-table, therock-shafts journaled longitudinally thereof, the tracks and thesheet-depressingarmscarried by the said rockshafts, and the endlessbands moving in contact with the said tracks, substantially asdescribed.

6. In a printing-press, the combination of the delivery-table, therock-shafts journaled longitudinally thereof, the tracks carried by thesaid rock-shafts, the reciprocating knifeframe, the connections betweenthe said frame and the rock-shafts, and the endless bands moving incontact with the said tracks, sub- I stantially as described. 7

7. In a printing-press, the combination of the delivery-table, therock-shafts journaled longitudinally thereof, the sheet-depressing armscarried by the rock-shafts, and the carrier consisting of the movabletracks and the endless bands moving in contact with the said tracks,substantially as described.

8. In a printingpress, the combination of the delivery-table, theadjustable hangers, the rock-shafts journaled in the said hangers, thetracks, and the sheet-depressing arms carried by the said rock-shafts,and the endless bands moving in contact with the said tracks, substantially as described.

9. In a printing-press, the combination of the delivery-table, therock-shafts, the tracks carried by the said rock-shafts and providedwith a vertical flange on their inner edges, and the endless bandsmoving in contact with the said tracks, substantially as described.

10. In a printing-press, the combination of the delivery-table, theshafts j ournaled transversely at the ends of the said table, theflanged pulleys adj ustably secured on the said shafts, the adjustabletracks, and the endless bands carried by the said pulleys and moving incontact with the said tracks, substantially as described.

11. In a printing-press, the combination of the delivery-table, thevertical standards se cured to the corners thereof,the rods securedtransversely at each end of the table between the said standards, thehangers adj ustably securedon the said rods, the rock-shafts journaledin hearings in the lower ends of the hangers, the tracks and thesheet-depressing arms carried by the said rock-shafts, and theadjustable endless belts moving in contact with the said tracks,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID I. EOKERSON.

WVitnesses M. J. MEHAN, FRANCIS HENDERSON.

